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Christian Bowser

@christianbowser

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Java integration developer at Rojo Integrations who developed SAP Cloud Integration adapters.

Spain

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What I'm looking for

I'm open to remote and hybrid opportunities.

At Rojo Integrations, I developed and maintained Java-based adapters for SAP Cloud Integration. I researched third-party API documentation, reviewed OpenAPI specifications, and tested endpoints with Postman.

I implemented adapter logic, generated UI metadata, and wrote JUnit tests. I also developed two variants of an existing production adapter while maintaining backward compatibility.

During my internship at Rojo Integrations, I consolidated duplicated methods and classes into a reusable Java library for SAP integration adapters. I refactored existing functionality, added JUnit and Mockito tests, and produced JavaDoc documentation.

On my Food Punχ final project, I’m developing a web application for comparing local-store products and managing store inventory and promotions. My other backend work includes a Spring Boot REST API for a dice game with user registration, JWT authentication, and MySQL and MongoDB persistence.

Experience

Work history, roles, and key accomplishments

Current

Java Backend Developer - Final Project

Current

IronHack

Jul 2025 - Present (1 year 4 months)

Developing a web application that enables users to compare local-store products and allows stores to manage inventory and promotions.

Java Spring Boot Spring Security MySQL Maven HTML CSS JavaScript

Enterprise Integration Developer

Rojo Integrations

Jan 2026 - Jul 2026 (6 months)

Developed and maintained Java-based adapters for SAP Cloud Integration. Researched third-party API documentation and reviewed OpenAPI specifications to define adapter requirements.

Java SAP Cloud Integration OpenAPI Postman Junit

Intern as Enterprise Integration Developer

Rojo Integrations

Oct 2025 - Nov 2025 (1 month)

Consolidated duplicated methods and classes into a reusable Java library for SAP integration adapters. Refactored existing functionality and implemented tests with JUnit and Mockito.

Java SAP Integration Junit Mockito Javadoc

Junior Java Developer Intern

IT Academy

Nov 2023 - Feb 2024 (3 months)

Contributed to a Spring Boot application composed of REST API microservices. Implemented controller endpoints and tests using Java, Spring Boot and reactive MongoDB.

Java Spring Boot REST APIs MongoDB GitHub Scrum

Java Backend Developer - Final Project

IT Academy

Feb 2023 - Feb 2024 (1 year)

Developed a REST API with user registration, JWT authentication and dice-game management. Implemented data persistence with MySQL and MongoDB and documented endpoints using Swagger/OpenAPI.